JEE MAIN - Chemistry (2024 - 31st January Evening Shift - No. 18)
Match List I with List II
| List - I (Complex ion) |
List - II (Electronic Configuration) |
||
|---|---|---|---|
| (A) | $$\mathrm{[Cr(H_2O)_6]^{3+}}$$ | (I) | $$t_{2 g}{ }^2 e_g^0$$ |
| (B) | $$\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$$ | (II) | $$t_{2 g}{ }^3 e_g{ }^0$$ |
| (C) | $$\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}$$ | (III) | $$t_{2 g}{ }^3 e_g{ }^2$$ |
| (D) | $$\left[\mathrm{V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$$ | (IV) | $$t_{2 g}{ }^6 e_g^2$$ |
Choose the correct answer from the options given below:
A-IV, B-I, C-II, D-III
A-III, B-II, C-IV, D-I
A-II, B-III, C-IV, D-I
A-IV, B-III, C-I, D-II
Explanation
$$\begin{aligned}
& {\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} \text { Contains } \mathrm{Cr}^{3+}:[\mathrm{Ar}] 3 \mathrm{~d}^3: \mathrm{t}_{2 \mathrm{~g}}^3 \mathrm{e}_{\mathrm{g}}^{\mathrm{o}}} \\
& {\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} \text { Contains } \mathrm{Fe}^{3+}:[\mathrm{Ar}] 3 \mathrm{~d}^5: \mathrm{t}_{2 \mathrm{~g}}^3 \mathrm{e}_{\mathrm{g}}^2} \\
& {\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+} \text { Contains } \mathrm{Ni}^{2+}:[\mathrm{Ar}] 3 \mathrm{~d}^8: \mathrm{t}_{2 \mathrm{~g}}^6 \mathrm{e}_{\mathrm{g}}^2} \\
& {\left[\mathrm{~V}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+} \text { Contains } \mathrm{V}^{3+}:[\mathrm{Ar}] 3 \mathrm{~d}^2: \mathrm{t}_{2 \mathrm{~g}}^2 \mathrm{eg}^{\mathrm{o}}}
\end{aligned}$$
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